a=int(input())
for i in range(1,a+1):
    for j in range(i,a+1):
        b=int((j*(j+1)+2)/2-i)
        if j==a and i!=a:
            print(b,end='\n')
        elif i==a:
            print(b,end='')
        else :
            print(b,end=' ')